... 2"-24",24"-96" 3.Qalification:ISO9001,API,CE astm stainless steel elbow 180 degree sizeSeamless:from 1/2" to 24" ... DIN2605 DIN2615 DIN2616 DIN2617 JISB2311 JISB2312 JISB2313materialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6.,ect)Stainless steel(ASTM A403 WP304,304L,316,316L,321 ... .,ect)Alloy steel(ASTM A234 WP12,WP11,WP22, ...